Furnace wall



c. A. STRACHOTA FURNACE WALL Filed Dec, 20. 1924 3 Sheets-Sheet 1 6101mm A. Jfi ae/m/a if f MAL/ ZZT W Aug. 23, 1927.

c. A. sTRAcHoTA FURNACE WALL Filed Dec, 20. 1924 3 Sheets-Sheet 2 1,639,711 Aug. 23, 1927. a A. STRACHOTA FURNACE WALL Filed Dec. 20. 1924 3 Sheets-Sheet 3 Patented Aug. 23, 1927.

UNITED 1 sr rss PATENT OFFICE.

CLARENCE A. STRACHOTA, OF CHICAGO, ILLINOIS, ASSIGNOR T LIPTAK FIRE-BRICK ARCH COlYIPANY, OF CHICAGO, ILLINOIS.

FURNACE WALL.

application filed December 20, 1924.- Serial No. 757,176.

, invention relates particularlyto, wall struc-- tures comprising. what are termed permanent outer walls and replaceable inner walls and which latter are subject to intense 1 heat so that they will burn out more rapidly than the outer walls and, hence, requirefrequent replacement. in whole or in art. In the accompanyingdrawings, which illustrate the invention, like characters indicate like parts throughout the several views. 1;

Referring to thedrawings: v

Fig. 1 is a perspective with some partsremoved, illustrating a wall, designed in accordance with this inventiony Fig. 2 is a view corresponding toiFig 1,

but with the outer wall, stripped except for the channel-forming. tiles or blocks;

Fig. 3 is a perspective of one of the anchor blocks of the outer wall;

' shelf-forming blocks;

Fig. 5 is aperspectlve showing of the Wedge or key blocks;

Fig. 6 is a perspective of one of the crown:

the buckstays. By reference to Fig. 2, 1t

blocks. or tiles .of the replaceable inner-wall; Fig. 7 is a perspective showing one of the lower channel-forming anchor plates; and

Fig.8,is a perspective showing one of the upper channel-forming anchor plates.

in the form of upright steel I-beamsproperly spaced at the exterior of the Wall structure The outer wall is preferably made up of horizontal belts ofbrick17 and interposed material, but the bricks 17111213 and usually alignment.

Fig. 4 is a perspective showing one of the v placed on the lower anchor plates and the The numeral 16 indicates buckstaysshown] rows of large channel-shaped anchorblocks or boxes 18. These anchor blocks 18 arepreferably of fire clay or. highly refractory will be common bricks, although they may, of; course, be of fire bricks. The anchor blocks. 18 are formed with large aligned channels that open at the inner sides thereof, andtheir lower flanges are formed with raised lock ledges 19,'for a purpose that will presently appear.

For holding thanchor blocks 18 horizontally aligned and anchored to the buckstays 16', there are provided lower anchor plates 20 and upper anchor plates 21, both of which have vertically extended flanges placed against the inner flanges of the buckstays and rigidly but detachably secured thereto by nut-equipped bolts 22. By reference to l ig. 2, it will be noted that each buckstay laps a joint between the abutting ends of two anchor plates 20 and two anchor plates 21, and is bolted thereto so as to tie the aligned plates rigidly together in proper The anchor blocks 18 are placed directly on the lower, anchor plates 20 and 7 the. latter, as shown, are provided with raised lock ribs 23 that engage lock grooves 24 in thebottoms of said blocks. The upper an- .chor plates 21 have downturned end flanges -25 that engage lock grooves 26 in the tops 7 ,of the blocks 18. The blocks 18 can be slid to position on upper and lower plates already applied to buckstay-s, or they may be upper anchor plates thereafter applied. In

.either case, the anchor blocks will be very securely held imposition and anchored to will be noted tliatthe anchor plates 20 and The", spaces between the horizontal rows of anchor blocks '18 or between the anchor plates 20 and 21 are filled in with the brick belts 17, which latter may be of any desired thickness'but will usually be of much less thickness orv width than the anchor blocks 18,.so as to leave intervening air spaces.

The replaceable inner wall is made up chiefly of horizontal belts of fire bricks 27,

horizontal rows or courses of shelf-forming bricks 28, and preferably also, horizontal rows or courses of crowning blocks or tiles 29. The shelf-forming blocks 28 extend from the inner wall into the channels of the anchor blocks 18, and on their under sides, they are formed with lock shoulders 28 that interlock with the lock ledges or shoulders 19 of said blocks 18. Wedge or ke blocks 30 are placed on the tops of the she f-forming blocks 28 and forced into close engagement with the upper flanges of the anchor blocks. Thus, the shelf-forming blocks 28 are very securely anchored to and rigidly supported from the anchor blocks 18 and are indirectly supported from the buckstays. This makes it feasible to use very thin brick belts 17 in the outer wall. The fire brick belts 27 are built directly on the shelf-forming blocks 28 and their weight is carried through the blocks 28 and 18 and anchor plates 20 and 21 to the buckstays. Of course, in a structure where buckstays are not secured to the anchor blocks, the outer wall would have to be made up of intermediate brick belts of much greater width orthickness than is shown in the drawings.

In the structure illustratedin vFigs. 1 to 8, inclusive, the wedge or key blocks 30 project considerably into the inner wall and, hence, the layer in part formed thereby is completed by a row of bricks 30.

- As a feature of the resent invention, provision is made whereby each brick belt 27 is independently supported by its own row of shelf-forming blocks and the several brick belts 27 are capable of independent expansion and contraction without transmitting the expanding force from the one belt to the other. This is accomplished by leaving a clearance space between the top row of tiles or crowning blocks 29 and the overlying ends of the shelf-forming blocks 28, as shown at 31. The lower flanges of the anchor blocks 18 come against or very close to the inner ends of the crowning blocks 29 and thus close the flame passage that might otherwise be formed by the gap 31. To further close this joint, however, the crown blocks 29 are-shown as provided with raised flanges 32 that lap with depending portions 28 of shelf-forming blocks 28.

In the wall structure described, as clearly appears, large air passages are formed between the inner and outer walls. These air spaces or passages protect the bricks of the outer Wall from the intense heat and, moreover, they afiord channels through which preheated air may be drawn into the fur-..

pace to support combustion when desired.

In the wall structure described, it is evident that the weight of the several brick belts of the inner wall is not accumulated on the lower belt but that each row of shelf-forming blocks supports its own load and independently carries the same to the rious modifications mean:

outer wall or, as shown, to the bucksta 's of the outer wall. 7 of the inner wall will'be subjected to much higher heat'temperature than others and,

From the foregoing, it is evident that the wall structure described is capable of vap and rearrangements within the scope of the invention herein disclosed and clalmed.

What I claim is: 1. A wall structure com rising an outer Some of the brick be ts Wall and an inner wall, sai outer wall comprising refractory anchoring channels and intervening brick belts, and said inner wall comprising vertically s aced horizontal rows of shelf-forming bloc extended therefrom into the anchoring channels of said outer wall and supported thereby, and upper and lower anchor plates anchored, respectively, to the tops and bottoms of said refractory anchoring channels.

2. A wall structure comprising an outer wall and an inner wall, said outer wall comprising refractory anchoring channels and intervening brick belts, and said inner wall comprising vertically spaced horizontal rows of shelf-forming blocks extended therefrom into the anchoring 'channels of said outer wall and supported thereby, upper and lower anchor plates anchored, respectively, to the tops and bottoms of said refractory anchoring channels, and buckstays to which said upper and lower anchoring plates are rigidl secured.

3. wall structure comprising an outer wall and an inner wall, said outer wall comprising refractory anchoring channels and intervening brick belts, and said inner wall comprising vertically spaced horizontal rows of shelf-forming blocks extended therefrom into the anchoring channels of said outer wall and supported thereby, upper and lower anchor plates anchored, respectively, to the tops and bottoms of said refractory an-' choring channels, and buckstays to which said upper and lower anchoring plates are rigidly secured at their abutting ends, the said buckstays serving to tie the said anchor plates together at their abutting ends.

4. The structure defined in claim 1 in which the brick belts of the inner and outer walls are spaced to form air passages, and in which said anchoring channels extend substantially to said inner wall to separate. the several horizontal air channels.

5. The structure defined in claim 1 in which the brick belts of the inner and outer;

walls are spaced to form air passages, and* in which said anchoring channels extend substantially to said inner wall to separate the several horizontal air channels, the said shelf-forming blocks and the top layer of the underlying belt of the inner Wall being spaced to permit free vertical expansion.

6. The structure defined in claim 1 in which the brick belts of the inner and outer Walls are spaced to form air passages, and in which said anchoring channels extend substantially to said inner Wall to separate the several horizontal air channels, the said shelf-forming blocks and the top layer of 10 the underlying belt of the inner Wall being spaced to permit free vertical expansion, the said shelf-forming blocks and the top layer of the underlying brick belt having vertically lapped joints.

In testimony whereof I affix my signature.

CLARENCE A. STRAQHOTA. 

